Lingyi Xin, Xuefang Zhou, Meihua Bi, Guowei Yang, Miao Hu, Haozhen Li, Tianshu Wang. Structural Design and Performance Analysis of Dual Lyot Filter with Switchable Channel Interval[J]. Chinese Journal of Lasers, 2022, 49(21): 2106002
- Chinese Journal of Lasers
- Vol. 49, Issue 21, 2106002 (2022)
Fig. 1. Structure of proposed comb filter
Fig. 2. Simulated transmission spectra of filter. (a) Rotating PC2 when θ1－α＝
Fig. 3. New channel interval combinations. (a) Channel interval determined by PMF1; (b) channel interval determined by PMF2
Fig. 4. Fluctuation of extinction ratio when PC2 is fixed and PC1 is adjusted. (a) Effect of PC1 on transmission spectrum；(b) effect of PC1 on amplitude of transmission spectrum
Fig. 5. Experimental setup of filter with improved structure
Fig. 6. Spectra with maximum amplitude obtained in experiment. (a)(b) Channel interval is 0.65 nm; (c)(d) channel interval is 0.34 nm
Fig. 7. Experimental setup of MWFL based on dual Lyot filter
Fig. 8. Multi-wavelength output spectra. (a) Channel interval is 0.65 nm; (b) channel interval is 0.34 nm
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